CN109779397B

CN109779397B - Door lock

Info

Publication number: CN109779397B
Application number: CN201811360225.2A
Authority: CN
Inventors: J.拉缇凯因恩
Original assignee: Ablay Ltd
Current assignee: Ablay Ltd
Priority date: 2017-11-15
Filing date: 2018-11-15
Publication date: 2021-06-22
Anticipated expiration: 2038-11-15
Also published as: CN109779397A; FI20176021A1; SE542963C2; SE1851415A1; TW201923206A; FI127562B; DE102018128058A1

Abstract

The present invention relates to door locks. The door lock (1) according to the invention comprises a separate locking bolt piece (6) between the follower (4) and the bolt (3), which locking bolt piece is arranged to move both relative to the bolt (3) and relative to the follower (4). The bolt (3) has an inclined surface (12) and the locking bolt piece (6) has a corresponding inclined surface, which guides the locking bolt piece to rotate away from the open position of the locking bolt piece (6) when an external force is applied to the bolt (3).

Description

Door lock

Technical Field

The present invention relates to door locks. In particular, the present invention relates to locking bolt assemblies for door locks.

Prior Art

In door locks, it is known to use a locking bolt arrangement for keeping the bolt extended, more precisely, the end of the holding bolt extended, wherein the bolt cannot be moved into the door lock if an attempt is made to push the bolt from the end of the bolt towards the door lock. When the door is closed, the locking bolt of the door lock can be arranged to be activated at that time, wherein the striker plate in the frame immediately guides the bolt towards the door lock. Activation of the locking bolt can also be achieved by means of a separate locking bolt lever or button connected to the door lock, in addition to which a common button for opening and closing the door can be connected to the door lock.

An attempt can be made to manipulate the locking bolt by striking the door lock or bolt to open it so that the impulse caused by the strike will move a part of the locking bolt arrangement inside the door lock, causing the part to move away from the position of the locking bolt. In this case the bolt can be pushed into the door lock from the end of the bolt, and the door can be opened without authorization.

Disclosure of Invention

It is an object of the present invention to provide a solution to the problems described above. This object is achieved in the manner described in the independent claims. The dependent claims describe various embodiments of the invention.

The door lock 1 according to the invention comprises a lock body 2, a bolt 3 and a follower 4. The follower 4 is rotatably arranged relative to the handle spindle axis 5 and is spring loaded towards a first position in which an end 3A of the bolt 3 associated with the follower 4 extends out of the lock body 2. The follower 4 is further arranged to pull the bolt end 3A into the lock body 2 when the follower is rotated due to a rotational force applied to the handle spindle axis 5. This rotational force for opening the door comes from a handle outside the door lock, which is connected to a spindle arranged on the spindle axis of said handle. The handle and spindle are thus mounted into the door lock (onto the handle spindle axis) for the purpose of normal use of the door lock. Instead of a handle, a rotary knob is also possible.

Between follower 4 and bolt 3 is a separate locking bolt piece 6, which locking bolt piece 6 is arranged to move both relative to bolt 3 and relative to follower 4. The follower has a guide surface 7 and the locking bolt has a corresponding guide surface 8 which bears against the follower guide surface 7.

The bolt 3 also has a surface of revolution 9 and the locking bolt piece 6 has a corresponding surface of revolution 10. When the bolt end 3A extends from the lock body 2 and the follower 4 is in the first position, there is a gap 11 between the swivel surface 9 and the corresponding swivel surface 10. The locking bolt work 6 is arranged to move towards the rotating surface 9 of the bolt 3 when the follower 4 is rotated due to a rotational force applied to the handle spindle axis 5. In this case, the gap 11 is eliminated and the swivel surface 9 rests on the corresponding swivel surface 10 and further the locking bolt piece 6 is swiveled into the open position. When the follower is rotated further, the locking bolt piece 6 is arranged to move linearly parallel to the longitudinal axis of the bolt 3 while moving the bolt end 3A towards the lock body, while the locking bolt piece 6 is in the open position. Thus, the end of the latch moves into the lock body.

The bolt 3 also includes an inclined surface 12 and the locking bolt piece 6 includes a corresponding inclined surface 13. The inclined surfaces 12 are arranged to guide an external force applied to the bolt 3 onto the corresponding inclined surfaces 13 and thus via the locking bolt piece 6 onto the lateral structure 2A of the lock body 2A. Further, the lock body 2 includes a support surface 14 and the locking bolt piece 6 includes a corresponding support surface 15. The corresponding support surface 15 is arranged to move against the support surface 14 due to an external force applied to the bolt 3, thus preventing the end 3A of said bolt from being moved into the lock body 2.

Drawings

In the following, the invention is described in more detail with reference to the accompanying drawings,

fig. 1-3 show an example of an embodiment according to the invention, with the latch extended normally,

fig. 4-6 show the example of fig. 1-3, the latch extending under the influence of an external force applied to the latch,

figures 7-9 show the example of figures 1-3 when rotation of the follower is initiated to move the end of the bolt into the lock body,

fig. 10-11 show the example of fig. 1-3, with the end of the bolt being moved into the lock body,

figure 12 shows an example of a latch used in an embodiment according to the invention,

FIG. 13 shows another example of a latch used in an embodiment according to the invention, an

FIG. 14 illustrates an example of a locking bolt work used in an embodiment in accordance with the invention.

Detailed Description

Fig. 1-3 show an example of an embodiment of a door lock according to the invention, in which the bolt is normally extended, i.e. more precisely, the end 3A of the bolt extends out from the body 2 of the door lock. The door lock 1 according to the invention comprises a lock body 2, a bolt 3 and a follower 4. The follower 4 is rotatably arranged relative to the handle spindle axis 5 and is spring-loaded towards a first position in which the end 3A of the bolt 3 associated with the follower 4 extends out of the lock body 2. The follower 4 is further arranged to pull the bolt end 3A into the lock body 2 when the follower is rotated due to a rotational force applied to the handle spindle axis 5. This rotational force for opening the door comes from a handle outside the door lock, which is connected to a spindle arranged on the spindle axis of said handle. In normal use, the bolt 3 is thus moved into the lock body by rotating the handle, so that the end of the bolt is moved completely or almost completely into the lock body.

The door lock 1, more precisely the lock body 2 of the door lock 1, has a point called the handle spindle axis 5. The follower 4 and the driving means 28 placed inside the lock body are placed in succession on the handle spindle axis parallel to said axis. Drive means 28, which may be referred to as internal and external drive means, are located on either side of the driven member 4. The drive means and the follower are arranged to rotate relative to the handle spindle axis 5. Both drives have a spindle bore 28A for the spindle. The spindle mounted in the spindle hole rotates the driving device when the handle connected to the spindle is rotated.

The driving means 28 is to be connected to the follower 4 so that the force rotating the handle can be directed to the follower, wherein the follower rotates and at the same time moves the bolt 3 into the lock body so that the door can be opened. A latch 26 for transmitting force is used between the drive and the follower. In the figures of the present description, the latch 26 is shown only in curvilinear lines and by way of example. In the example of the figures, the follower has a point of rotation axis of the latch (black dot) with respect to which the latch can be screwed into or out of the force transmission connection. In the force transmission connection, the other end of the catch rests on a force transmission projection 27 of the drive. In the example of the figures, the latch 26 is in a force transmitting connection. In this connection, the handle spindle axis 5, the drive means 28, the spindle bore 28A and the latch 26, which are known per se components or points, are shown to illustrate normal use of the door lock, wherein the door is opened by rotating the handle. If the latching scheme 6 is guided (e.g. electronically or mechanically) into the force transmitting position, rotational force is transmitted from the driving means 28 to the follower 4 via the latch, the follower 4 moving the bolt 3 further into the lock body 2. In this case, the end 3A of the latch moves completely or almost completely into the lock body. If the latching scheme 6 is not guided into the force transmitting position, the rotational force applied to the handle only rotates the drive via the spindle.

The bolt 3 has a surface of revolution 9 and the locking bolt piece 6 has a corresponding surface of revolution 10. When the bolt end 3A extends from the lock body 2 and the follower 4 is in the first position, there is a gap 11 between the swivel surface 9 and the corresponding swivel surface 10. The locking bolt work 6 is arranged to move towards the rotating surface 9 of the bolt 3 when the follower 4 is rotated due to a rotational force applied to the handle spindle axis 5. In this case, the gap 11 is eliminated and the swivel surface 9 rests on the corresponding swivel surface 10 and, further, the locking bolt piece 6 is swiveled into the open position. When the follower is rotated further, the locking bolt piece 6 is arranged to move linearly parallel to the longitudinal axis 5A of the bolt 3 while the locking bolt piece 6 is in the open position, moving the end 3A of the bolt towards the lock body. Thus, the end of the latch moves into the lock body. The door can be normally opened by rotating the handle.

Fig. 7-9 illustrate a condition where follower 4 has rotated just enough that locking bolt work 6 has moved into the open position. Rotating the follower has caused the gap 11 between the rotating surface 9 and the corresponding rotating surface 10 to disappear, wherein these surfaces rest on each other forming a support point area for rotating the locking bolt into the open position. In this case, the inclined surface 12 of the bolt and the corresponding inclined surface 13 of the locking bolt piece can also guide the rotation of the locking bolt piece into the open position. It may also be noted that when the door is normally opened, the support surface 14 of the lock body 2 does not block the locking bolt member 6 from rotating into the open position, and thus the support surface 14 is visible in figures 7-9. In fig. 2, 3, 5, 6, 8, 9 and 11, the follower is not shown so that the locking bolt piece 6 and the rear end portion 6B of the bolt are more visible.

Thus, the bolt 3 also comprises an inclined surface 12 and the locking bolt piece 6 comprises a corresponding inclined surface 13. The inclined surfaces 12 are arranged to guide an external force applied to the bolt 3 onto the corresponding inclined surfaces 13 and thus via the locking bolt piece 6 onto the lateral structure 2A of the lock body. Further, the lock body 2 includes a support surface 14 and the locking bolt piece 6 includes a corresponding support surface 15. The corresponding support surface 15 is arranged to move against the support surface 14 due to an external force applied to the bolt 3, thus preventing the end 3A of said bolt from moving into the lock body 2.

The locking bolt work 6 is thus arranged to rotate away from the open position of the locking bolt work 6 due to an external force applied to the bolt 3. An external force, such as a blow applied to the bolt, pushes the bolt 3 into the lock body, wherein a part of the blow force is directed onto the lateral structure 2A of the lock body as it is guided by the inclined surface 12 of the bolt and the corresponding inclined surface 13 of the locking bolt piece. At the same time, a portion of the force of the blow pushes the locking bolt piece against a support surface in the lateral structure of the lock body. Fig. 4-6 show a situation in which an external force has been applied to the latch. Thus, the external force may be, for example, a blow applied to the end 3A of the bolt, a blow applied to the panel 2C of the door lock and thus transmitted to the bolt 3, or a wire or slider pushed through the bolt opening of the panel, which wire or slider pushes the bolt inside the lock body. Thus, it can be said that in the present description by an external force applied to the bolt is meant a force which due to a force applied to the bolt or lock body 2 or the panel 2C of the lock body tries to move the bolt into the lock body and is therefore not a rotational force transmitted via the transmission piece normally used for opening doors. The faceplate may be considered part of the lock body.

It can also be said that in the solution according to the invention, an external force that linearly guides the bolt into the lock body parallel to its longitudinal axis 5A is slightly rotated via the locking bolt piece towards the side of the lock body, i.e. towards the lateral structure of the lock body. Furthermore, it should be mentioned that the gap 30 between the support surface 14 of the lock body 2 and the corresponding support surface 15 of the locking bolt piece 6 is eliminated due to external forces which are not transmitted from the locking bolt piece 6 to the follower 4, but the gap 11 between the rotation surface 9 of the bolt 3 and the corresponding rotation surface 10 of the locking bolt piece 6 is still present.

In the exemplary embodiment according to fig. 1-11, the bolt 3 comprises a pin 16, the outer surface of the pin 16 forming said turning surface 9, and the locking bolt piece 6 comprises a groove 17, the groove 17 (i.e. the edge of said groove) forming said corresponding turning surface 10. Fig. 12 shows another embodiment 31 of the latch, where the latch comprises two

pins

18A, 18B, the outer surfaces of which form the swivel surface 9, and the locking bolt piece 6 comprises a recess 17, the recess 17 forming the corresponding swivel surface 10. Fig. 13 shows yet another embodiment 311 of the latch, where the latch 3 comprises two

openings

19A, 19B, the edge surfaces of which form said turning surfaces 9, and the locking bolt piece 6 comprises two

pins

20A, 20B, which form said corresponding turning surfaces 10.

It can be noted that during an external force action, such as a blow, the bolt and the locking bolt piece operate such that both the bolt and the locking bolt piece move backwards until the bolt with its corresponding support surface 15 hits against the support surface 14 of the side of the lock body. A gap is maintained between the rotating surface 9 of the bolt and the corresponding rotating surface 10 of the locking bolt piece, which means that an external force applied to the bolt does not rotate the locking bolt piece into the open position (while guiding the follower 4 to rotate), but instead an external force is directed to rotate the locking bolt piece out of the open position of the locking bolt piece.

In the embodiment of fig. 1-9, the locking bolt member 6 comprises a guide pin 21, the curved surface of the guide pin 21 forming said corresponding guide surface 8, and the follower 4 comprises a hole 22, the edge surface of the hole 22 forming said guide surface 7. Figure 14 shows another embodiment of the locking bolt member 6 in which the locking bolt member 6 comprises an aperture 23, the edge surface of the aperture 23 forming said corresponding guide surface 8, and the follower 4 comprises a guide pin 24, the curved edge of the guide pin 24 forming said guide surface 7. There is no gap between the guide surface 7 and the corresponding guide surface 8, which can be said to rest against each other, or so small that it is not really meaningful in terms of function. In the present description, the expression "against each other" therefore means that there may be a small gap between the guide surface 7 and the corresponding guide surface 8.

The rear end portion 3B of the bolt 3 may comprise one or more projections 3C parallel to the longitudinal axis of the bolt, to which the turning surface 9 is connected and the locking bolt piece 6 is placed between the turning surface 9 and the inclined surface 12 of the bolt. The corresponding guide surface 8 and corresponding swivel surface 10 may also be placed in the rear portion 6B of the locking bolt piece 6 and the corresponding inclined surface 13 may be placed in the front portion 6A of the locking bolt piece 6. The

bolt

3, 31, 311 may also have a protective plate extension 32, the protective plate extension 32 being used to try to prevent a wire or slide from being pushed into the lock body via the bolt opening of the face plate 2C.

The corresponding inclined surface 13 of the locking bolt piece 6 may also include a stop projection 6C and the bolt 3 may include a stop surface 3D. The stop projection and the stop surface oppose each other when the locking bolt piece 6 is being rotated into the open position. Fig. 14 shows the stopper projection 6C. It is also clear from figure 14 that the corresponding guide surface 13 may also have a bending point 130, which bending point 130 facilitates the rotation of the locking bolt piece towards the lateral structure 2A of the lock body or towards the open position of the locking bolt piece. It is also practical that the locking bolt piece has a surface 6D, which surface 6D is pressed against the lateral structure 2A of the lock body due to an external force applied to the bolt.

The lateral structure 2A of the lock body may comprise an inwardly directed projection 2D in the lock body, the edge of which projection forms the support surface 14. In the embodiment of fig. 1-11, the follower 4 is spring loaded towards the first position by a spring 25, the spring 25 being directly connected to the follower. There may also be a reduction 29 near the inclined surface 12 of the latch to save material.

The lock body may have, for example, a microswitch with which the position of the follower 4 can be monitored. A connection between the micro switch and the follower may be established such that external forces, such as striking the bolt or the lock body, are not transmitted to the follower via the micro switch to rotate the follower.

The present invention effectively prevents the effect of external forces applied to the bolt or lock body from being transmitted to follower 4 to rotate the follower and simultaneously release the locking bolt by rotating locking bolt member 6 into its open position. The solution according to the invention also guides the external force so that the locking bolt is better/more securely held in the locked position, the locking bolt not being able to rotate into the open position.

It is evident that the door lock comprises other parts than the parts just described above. However, they are not shown in the figures for the sake of clarity, in which the invention and its functions can be clearly demonstrated. For example, only a portion of the lock body 2 is shown, which is seen to be placed into the lock body. Those skilled in the art will appreciate that in figure 1 the part corresponding to the visible part of the lock body 2 will block the part placed into the lock body when seen from the direction of figure 1. In addition, the lock cylinder and/or the electronic lock device are not visible in the figures.

The door lock according to the invention can be implemented in various ways, as can be observed from the examples described above. The invention is thus not limited to the examples presented above, but may be implemented in a variety of ways within the scope of the independent claims.

Claims

1. A door lock (1) comprising a lock body (2), a bolt (3) and a follower (4), the follower (4) being rotatably arranged with respect to a handle spindle axis (5) and being spring loaded towards a first position in which an end (3A) of the bolt (3) associated with the follower extends out from the lock body (2), and the follower (4) being further arranged to pull the end (3A) of the bolt into the lock body (2) when the follower is rotated by a rotational force applied to the handle spindle axis (5), characterized in that between the follower (4) and the bolt (3) is a separate locking bolt (6), the locking bolt (6) being arranged to move both with respect to the bolt (3) and with respect to the follower (4), the follower has a guide surface (7) and the locking bolt has a corresponding guide surface (8) which rests on the guide surface (7) of the follower,

and the bolt (3) has a surface of rotation (9) and the locking bolt piece (6) has a corresponding surface of rotation (10), when the end (3A) of the bolt extends from the lock body (2) and the follower (4) is in the first position, there is a gap (11) between the surface of rotation (9) and the corresponding surface of rotation (10), and the locking bolt piece (6) is arranged to move towards the surface of rotation (9) of the bolt (3) when the follower (4) is rotated by a rotational force applied to the handle spindle axis (5), wherein the gap (11) is eliminated and the surface of rotation (9) bears against the corresponding surface of rotation (10) and the locking bolt piece (6) is rotated into an open position,

and when the follower is further rotated, the locking bolt piece (6), while being in the open position, is arranged to move linearly parallel to the longitudinal axis of the bolt (3) while moving the end (3A) of the bolt towards the lock body,

and the bolt (3) further comprises an inclined surface (12) and the locking bolt piece (6) comprises a corresponding inclined surface (13), the inclined surface (12) being arranged to guide an external force applied to the bolt (3) onto the corresponding inclined surface (13) and, thus, via the locking bolt piece (6) onto a lateral structure (2A) of the lock body,

and the lock body (2) comprises a support surface (14) and the locking bolt piece (6) comprises a corresponding support surface (15), the corresponding support surface (15) being arranged to move against the support surface (14) due to an external force applied to the bolt (3), thus preventing the end portion (3A) of the bolt from being moved into the lock body (2).

2. A door lock (1) according to claim 1, characterized in that the locking bolt piece (6) is arranged to rotate away from the open position of the locking bolt piece (6) due to an external force applied to the bolt (3).

3. A door lock (1) according to claim 2, characterized in that the bolt (3) comprises a pin (16), the outer surface of the pin (16) forming the swivel surface (9), and the locking bolt piece (6) comprises a groove (17) forming the corresponding swivel surface (10).

4. A door lock (1) according to claim 2, characterized in that the bolt (3) comprises two pins (18A, 18B), the outer surfaces of which form the swivel surface (9), and the locking bolt piece (6) comprises a groove (17), which forms the corresponding swivel surface (10).

5. A door lock (1) according to claim 2, characterized in that the bolt (3) comprises two openings (19A, 19B), the edge surfaces of which form the swivel surface (9), and the locking bolt piece (6) comprises two pins (20A, 20B), which form the corresponding swivel surface (10).

6. A door lock (1) according to any one of claims 3-5, characterized in that the locking bolt piece (6) comprises a guide pin (21), the curved surface of which forms the corresponding guide surface (8), and the follower (4) comprises an aperture (22), the edge surface of which forms the guide surface (7).

7. A door lock (1) according to any one of claims 3 to 5, characterized in that the locking bolt piece (6) comprises a hole (23) whose edge surface forms the corresponding guide surface (8), and the follower (4) comprises a guide pin (24) whose curved edge forms the guide surface (7).

8. A door lock (1) according to any one of claims 6-7, characterized in that the rear end (3B) of the bolt (3) comprises one or two protrusions (3C) parallel to the longitudinal axis of the bolt, to which protrusions the turning surface (9) is connected, and that the locking bolt piece (6) is placed between the turning surface (9) and an inclined surface (12) of the bolt.

9. A door lock (1) according to any one of claims 6 to 8, characterized in that the corresponding guide surface (8) and the corresponding swivel surface (10) are placed into the rear portion (6B) of the locking bolt piece (6) and the corresponding inclined surface (13) is placed into the front portion (6A) of the locking bolt piece (6).

10. A door lock (1) according to claim 9, characterized in that the corresponding inclined surface (13) of the locking bolt piece (6) comprises a stop protrusion (6C) and the bolt (3) comprises a stop surface (3D), which stop protrusion and stop surface are opposite each other when the locking bolt piece (6) is screwed into the open position.

11. A door lock (1) according to any one of claims 6-10, characterized in that the lateral structure (2A) of the lock body comprises an inwardly directed projection (2D) in the lock body, the edge of which projection forms the support surface (14).

12. A door lock (1) according to any one of claims 6-11, characterized in that the follower (4) is spring loaded towards the first position by a spring (25) which is directly connected to the follower.